Ubuntu Linux: Mehrere Schwachstellen
WID-SEC-2023-1903 · first 27.07.2023 · updated 19.05.2026 · CVSS 7,8
What it is about
Ubuntu Linux ist die Linux Distribution des Herstellers Canonical. Ein lokaler Angreifer kann mehrere Schwachstellen im Ubuntu Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen und seine Rechte zu erhöhen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsvorkehrungen zu umgehen
- seine Rechte zu erhöhen
Am I affected?
Affected according to the BSI:
- Ubuntu Linux
- Ubuntu Linux Kernel
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Ubuntu Security Advisory vom 2023-07-26 ubuntu.com
- Ubuntu Security Advisory vom 2023-07-26 ubuntu.com
- wiz.io Blog www.wiz.io
- Ubuntu Security Notice USN-6260-1 vom 2023-07-27 ubuntu.com
- Ubuntu Security Notice USN-6261-1 vom 2023-07-28 ubuntu.com
- Ubuntu Security Notice USN-6285-1 vom 2023-08-11 ubuntu.com
- Ubuntu Security Notice USN-8255-2 vom 2026-05-11 ubuntu.com
- Ubuntu Security Notice USN-8255-3 vom 2026-05-19 ubuntu.com
CVE: CVE-2023-2640, CVE-2023-32629
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.